Debian DLA-1604-1 : lxml security update

medium Nessus Plugin ID 119560
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Debian host is missing a security update.

Description

It was discovered that there was a XSS injection vulnerability in the LXML HTML/XSS manipulation library for Python.

LXML did not remove 'javascript:' URLs that used escaping such as 'j a v a s c r i p t'. This is a similar issue to CVE-2014-3146.

For Debian 8 'Jessie', this issue has been fixed in lxml version 3.4.0-1+deb8u1.

We recommend that you upgrade your lxml packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2018/12/msg00001.html

https://packages.debian.org/source/jessie/lxml

Plugin Details

Severity: Medium

ID: 119560

File Name: debian_DLA-1604.nasl

Version: 1.7

Type: local

Agent: unix

Published: 12/11/2018

Updated: 1/11/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python-lxml, p-cpe:/a:debian:debian_linux:python-lxml-dbg, p-cpe:/a:debian:debian_linux:python-lxml-doc, p-cpe:/a:debian:debian_linux:python3-lxml, p-cpe:/a:debian:debian_linux:python3-lxml-dbg, cpe:/o:debian:debian_linux:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 12/10/2018

Vulnerability Publication Date: 12/2/2018

Reference Information

CVE: CVE-2018-19787